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INDONESIA
NUMERICAL (Jurnal Matematika dan Pendidikan Matematika)
Published by Universitas Ma'arif Lampung
ISSN : -     EISSN : -     DOI : -
Core Subject : Education,
Mathematics
Arjuna Subject : -
Articles 6 Documents
 1 
Search results for , issue "Vol. 8 No. 2 (2024)" : 6 Documents clear
Performance Quantile Regression and Bayesian Quantile Regression in Dealing with Non-normal Errors (Case Study on Simulated Data) Lilis Harianti Hasibuan; Ferra Yanuar; Harahap, Vika Pradinda; Qalbi, Latifatul
Numerical: Jurnal Matematika dan Pendidikan Matematika Vol. 8 No. 2 (2024)
Publisher : Universitas Ma'arif Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25217/numerical.v8i2.4922

Abstract

This research discusses the performance of quantile regression and Bayesian quantile regression methods. Quantile regression uses parameter estimation by maximizing the value of the likelihood function, while Bayesian quantile regression uses parameter estimation with the Bayesian concept. The Bayesian concept in question looks for solutions from the posterior distribution with Gibbs Sampling. The purpose of the study is to compare the two methods. The data used is simulated data with a total of 100 generated data. The results obtained by the Bayesian quantile regression method are superior to the indicator used MSE with the result of 1.7445. The smallest MSE value is obtained in the model that is in quantile of 0.5
Development of GABUT Media Using Critical Thinking Ability Indicators of High School Students in Learning Mathematical Composition Functions Vedianty, Adinda Syalsabilla Aidha; Lestari, Andika Setyo Budi; Rayungsari, Maya; Darmayanti, Rani
Numerical: Jurnal Matematika dan Pendidikan Matematika Vol. 8 No. 2 (2024)
Publisher : Universitas Ma'arif Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25217/numerical.v8i2.5137

Abstract

This study aims to address the lack of interactive learning media specifically designed to enhance students' critical mathematical thinking skills in the topic of function composition. Based on previous research highlighting the potential of viral media in mathematics learning, this study develops and tests an innovative learning medium called GABUT. This medium integrates game elements and interactive learning using QR codes and various levels of problem difficulty. The methodology employed is Research and Development (R&D) with the 4D development model: Define, Design, Develop, and Disseminate. In the Define stage, needs analysis was conducted through interviews and questionnaires. The Design stage involved the initial prototype design of the GABUT media. During the Develop stage, the prototype was tested and evaluated through pre-tests, post-tests, and statistical t-test analysis. The Disseminate stage involved implementing the media in several schools over 12 weeks. The results indicate that GABUT media effectively enhances students' critical mathematical thinking skills, with an average test score improvement of 25% (standard deviation = 5.6, p-value < 0.05). Additionally, 85% of students reported feeling more motivated and engaged in learning mathematics after using this media. Challenges encountered included students' initial adaptation to the new media and issues with "zonk" questions. Improvements were made through initial orientation sessions and revisions to the "zonk" questions. This study makes a significant contribution to mathematics education by providing an innovative and effective learning medium that not only improves students' conceptual understanding of mathematics but also motivates them and increases their participation in the learning process.
The Contribution of Archimedes in Greek Mathematics After Euclid to the Advancement of Modern Mathematics: Implications for Student Understanding Nadira, Khaisa Alifa; Harisman, Yulyanti
Numerical: Jurnal Matematika dan Pendidikan Matematika Vol. 8 No. 2 (2024)
Publisher : Universitas Ma'arif Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25217/numerical.v8i2.5576

Abstract

This study examines Archimedes' contributions to the development of Greek mathematics after Euclid and its impact on the advancement of modern mathematics, as well as its implications for students. Although his contributions have been widely discussed, a deep understanding of the relevance of Archimedes' principles to modern mathematics is still limited. The purpose of this study is to analyze Archimedes' contributions and their implications across various fields of mathematics and their contemporary applications. The research method used is descriptive qualitative with a literature review approach to understand Archimedes' contributions within the historical context and modern relevance. The instruments used are relevant scholarly literature, including books and journals. The literature review includes previous works that highlight Archimedes' contributions to mechanics and mathematics, particularly in areas such as geometry, calculus, and the understanding of volume and surface area. The data analysis technique applied is descriptive qualitative analysis to identify patterns and themes in Archimedes' contributions, such as his development of methods for calculating areas and volumes of geometric bodies, as well as his innovative work in fluid mechanics. The results of this study emphasize the importance of historical understanding of Archimedes' contributions to mathematics and their implications for students. This study encourages students to explore the historical roots of modern mathematical concepts, fostering a deeper appreciation for the evolution of mathematical thought. The implications and benefits of this study motivate students to develop critical thinking and innovative problem-solving skills, applying mathematical concepts in real-world contexts.
Development of E-LKPD Creative Product Business Analysis Entrepreneurship-Based to Form Independence Character Vocational Students Dian Krisnawati; Hariyani, Sri; Tatik Retno Murniasih
Numerical: Jurnal Matematika dan Pendidikan Matematika Vol. 8 No. 2 (2024)
Publisher : Universitas Ma'arif Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25217/numerical.v8i2.4971

Abstract

A number of questionnaires with 3 options (work, entrepreneurship, and continuing to a higher school level) were given to students of SMK NU Sunan Ampel Poncokusumo Malang. The findings showed that most students chose work and entrepreneurship compared to continuing to a higher school level. Therefore, students need to be equipped with insight into business analysis, so that students are able to manage their business properly. The purpose of this study was to develop an Electronic Learner Worksheet (E-LKPD) of entrepreneurship-based creative product business analysis to form the character of student independence that meets the validity requirements. ADDIE development model was used in this research, namely: analyzing the achievement of core competencies and basic competencies of SMK (Vocational High School), learning resources used, ongoing learning situations, and the level of understanding of Vocational students of business analysis material; designing E-LKPD business analysis and research instruments in the form of material validation sheets and E-LKPD media validation sheets; and analyzing validity data using validation sheets. The results showed the material validity test to assess competence in E-LKPD was 81.25% and the media validity test was 93.75%. The business analysis material fulfills relevant aspects for learner independence and presents information that can measure the level of understanding of students.
The Impact of Ethnomathematics Application on Mathematics Learning Achievement in Fourth Grade at SD Negeri 02 Bekonang Ariani, Ardian Virgina; Suswandari, Meidawati
Numerical: Jurnal Matematika dan Pendidikan Matematika Vol. 8 No. 2 (2024)
Publisher : Universitas Ma'arif Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25217/numerical.v8i2.5614

Abstract

This study aims to investigate the impact of implementing ethnomathematics on mathematics learning outcomes among fourth-grade students at SD Negeri 02 Bekonang. The research employs a quantitative method with an experimental approach, involving a population of 44 students from classes IV (A) and IV (B). The students were divided into two groups: the experimental class, which applied ethnomathematical concepts through the traditional game engklek, and the control class, which learned without incorporating ethnomathematical concepts. The findings indicate that the experimental class achieved higher post-test scores compared to the control class. The average post-test score for the experimental class was 64.55, while the control class scored 51.82. The t-test analysis yielded a significance value of 0.037 < 0.05, demonstrating a significant influence of ethnomathematics on students' mathematics performance. The ethnomathematical approach, which integrates cultural elements into learning, has proven to be an effective strategy in mathematics education. This approach not only enhances students’ conceptual understanding but also makes learning more engaging and meaningful. In this study, the engklek game was used as a learning medium to introduce the concept of geometric shapes, allowing students to grasp the material more easily through direct experience. Therefore, this approach is recommended for mathematics instruction in elementary schools to foster student engagement and comprehension. This study also encourages teachers to be more creative in developing concrete and contextually relevant teaching methods, ensuring that mathematics is no longer perceived as a daunting subject.
Algebraic Reasoning in Controversial Problem-Solving: Multiple Representations Muniri, Muniri; Musrikah, Musrikah
Numerical: Jurnal Matematika dan Pendidikan Matematika Vol. 8 No. 2 (2024)
Publisher : Universitas Ma'arif Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25217/numerical.v8i2.5631

Abstract

Controversial issues have the potential to stimulate differences or cognitive conflicts in problem-solving, both in terms of approach, argumentation, and the solutions produced. Resolving cognitive conflict can be done not only through conventional logical thinking but also by understanding objects that encompass facts, concepts, principles, and skills, as well as considering external aspects surrounding the problem. This study aims to explore the controversy reasoning problems of university students in solving multiple representation problems. This research is a case study with a qualitative approach. The selected subjects were students who experienced controversy in solving multiple representation problems. The instruments used were tests and interviews. Data analysis was carried out through data reduction, data presentation, and conclusion drawing. There are three levels of controversial reasoning: clarification level, exploration level, and initial level. Among 99 students solving multiple representation problems, the results showed that 19 students (19.19%) were at the initial level, 45 students (45.45%) at the exploration level, and 35 students (35.35%) at the clarification level. Qualitatively, controversial reasoning at the clarification level is the best compared to the exploration and initial levels. The advantage of subjects at the clarification level is that, besides understanding the problem, their algorithmic skills are highly structured. These subjects are also able to provide concise, logical arguments and find the correct solution.

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